Material-shredding machine



RYTHER Feb.' 9 ,1926;

MATERIAL SHREDDING MACHINE 4 Sheets-Sheet 1 Fild; sept. 2, 1924 3'5- 26, GEORGE 0. RVT/'IER Feb. 9 1926. 4 1,572,366

- G. D. RYTHER 'MATERIAL SHR'EDDING MACHINE Filed Sept. 2, 1924 4 Sheets-Sheet 2 l y| Hl H 1VU11 llllllllll un mman: 2 V 70 3 M v Arm/www5 Feb. 9 1926 G. D. RYTHER MATERIAL SHREDDI'NG MACHINE Patented Feb. 9, 1926.

UNITED STATES GEORGE D. RYTHER, OF CARTHAGE, NEVI 1,512,3i vri-iTEixur OFFICE.

YORK, ASSEGNR TG RYTHER & PRINGLE CO., OF CARTHAGE, NEW YORK.

.i MATERIAL-SHREDDING MACHINE.

Application filed September To afl iii/'10m 'it muy concern.'

lo it known that l, (iconen D. livriinn, a citizen oit the United States, residing 'at (farthage, in thc county ot Jeti'erson and tuting the furnish to the paper makingprocess, to small particles ot a` size desirable Vtor hydration. -'1`he invention relates niore. particularly to the machines of the described haring' the n'iater'ial to be shredder 'ted hy suitable nieans into a` 'wabble saw where the n'iaterial is reduced tosinall particles by the saw teeth.

in paper stock sl'iredders heretofore used, the saw arbors could not be quickly and easily disassembled so that the saws' could he conditioned at frequent intervals. y Consii'ierable ditiiculty has been experienced with other Shredders because the old papers or other stock were cut apart in such ina-nner that the fibers are cut too short and the paper made therewith does not have` sutiicient strength. v

An object ot this invention is to provide apaper stock shredder which can be easily and quickly `disassembled for conditioning or replacing the saws; also to provide a paper stock shredder which will tear the. inaterial apart in proper lengths with little or no cutting action, thus ijiroducinp' a paper which will be reiry strong; and also to iinprore paper stock shredders in other respects hereinafter described and settorth claims. erence is to be had to the accompanyng dlawings 'forming part ot this speciicat` in., in which: l

Fig. 1 is a. plan View oi' the paper stock shredder. i

Fig. 2 is an elevation ot one side thereof.

Fig. 3 is an elevation oit the `other side of said shrei'hlcr.

Fig. t is a diagrannnatic plan viewot the dririno' mechanism tor the shredder.

is a sectional elevation through the shredder on line Fig.

lfig. (i is Va longitudinal vertical section through the center ot the pulp shredder.

l? T is a sectional view through the pulp 2, 1924. Serial No. 735,320.

shredder on the line 5 Fig. 8 is asectional view through. the shredder on line 8 8, Fig.

9 is a sectional Viewy through the shredder on line 9 4), Fig. i

Referring to the drawings in detail, 10 indicates a side traine ot the machine, and 11 indicates a second side traine thereof, said frames being `secured together and spaced apart bywa. vrear spreader 12 and a .front spreader 13. These side trames and 11 serve to support the moving parts of the 1na chine. Theteed conveyor of the machine inay be constructed as follows: The side frames 10 and 11 niay. be pro-vided with hearings 14C adajacent the rear spreader 12 for rotatably supporting` a sprocket shaft 15. A bearing 16 istorined on each side traine het-Ween the spreaders'lQ and 13, said bear-` ings rotatably supporting a sprocket shaft 1T, while Va hearing18 in each side traine rotatably supports the sprocket shaft 1913etween the shafts. 15 and 17. n A series of sprocket Wheels 20,21 and 22 is inounted onA series comprising any Vdesired number of sprocket Wheels, and the respective sprocket `wl'ieels on each shaft are spaced-apart and Jare in Valineinent one withl the other; -Feed chains '23 pass around the three sprocket wheels in alineinent on the several shafts, the chains being ot a number to correspond to the number of sprocket wheels in each series. Thus, the upper reaches ot the feed chains 23 constitute a feed apron which is slidably supported on a table 24 extendingbetwcen the side ranies 10 and 11.V All ofthe sprocket'wheels on the shafts 17 4and 19 are rigidly secured thereto, while only one ot the eight sprocket Wheels on shaft 15is secured theretoso that the shaft 15 is rotated i'roin the shattv 17 bythe cliaiironther fixed sprocket wheel, While' the ther loose sprocket whe-els on the sha'it 15 allow for any inequalities in the lengths or tensionsV ot the chain. Flat bars 25 are positioned between upper reaches ot the chains Q3' so that the stock to be shredded is support-ed as it inoves toward the saws on the apron oit chains. The rough surface of the i apron of chains engages the material and insures that the material is positively conveyed into the shredding niechanisnrto be described.`

y g 5, Fig. 2, Withthe saw arbor inclined and partly disassen'ibled.

the .shafts 15, 19 and 17 respectively, each" The driving means for the feed conveyor may be arranged as follows:

26 designates a gear secured to the shaft 19 for positively :rotating` the shaft, said gear meshing with a pinion 27 secured kon a counter-shaft 28. A gear 29 is also secured on the shaft 28 and meshes with a.

pinion 30 on a second counter-shaft 31. The

shaft 28 is jo'urnalled in bearings 32 on the side frames l0 and 11,V andthe shaft 31 is jonrnalled in a bearing 33 secured to the Aside frame 10. Apulleyw34 is secured to the end of the shaft 3l and a belt 35 connects the pulley 34 with a small drive lpulley l36 onV a saw shaft or arbor 37. A tightener pulley 3S is rotatably mounted on the arm 39 of a bell crank lever pivoted on pin 40,

the other arm of said leverbeing provided with a handle 41 so as to cause the pulley 3S to move into and vout of engagement with the belt 35, thus starting and stopping the apron of ehainsyas desired.

vThe machine is also preferably provided i with abed knife.r This bedknife 42 is preferably mounted on the'spr'eader`13 ladjacent the sprocket wheels 22, and a'feed roll 43 is yieldingly and rotatably mounted above the sprocket wheels 22 onv the shaft 44. The ends of Vthe shaft 44 are preferably journailedA in the ends of theroek arms 45 and 46, the other ends ofthe arms 45 and .46 being pivotally mounted on a shaft 47 journailed in bearings 48 secured to the side frames l() and 11. The. feed roll 43 is preferably provided with tradially vdisposed flutes or knives 49 which bear on the material to be shredded, causingthe material to be flattened into a substantially uniform. sheet by the weight of the feed roll 43 and ii0 arms 45 and 46, so that the materialis delivered in a continuous, sheet onto the top `of the bed knife 42. The feed roll 43 is positivelydriven at about the same peripheral speed Vas the chains 23 by a sprocket wheel 50 on the shaft 44 connected by a 'chain 51 to a sprocket wheel 52 on the shaft 47. The shaft 47 is continuously rotated by a gear 53`mounted thereon andfmeshing with algear 54 on the shaft 15. Aftightener spocket 55 on an adjustable arm 56, secured to the arm 46 takes'the slackiout'of the chain and maintains the chain at proper driving tension.

Suitable means are provided for driving" the saw varbor 37. In the form shown, thev saw arbor 37 is provided with a small section 57 at one end, on which is mounted a fly wheel and pulley 58 which can be connected to any suitable source of power by a belt, not shown, so that said saw arbor 'is 60 continuously rotated. The pulley58 is secured on the arbor section in any suitable .way, such as by 'a nut 59 on the threaded end, of said arbor section. According to the invention, means are provided for detachably mounting the arbor and saws on the of the shaft.

machine. For this purpose, in the embodimentI shown, as bearing case 60y is rotatably mounted on thearbor 37 inwardly beyond the pulley 58, and roller or other bearing vraces. 6l are secured inside said bearing case 60. The bearing case 60v is preferably semi-- spherical in shape and is slidably received in a semi-spherical journal formed between a bearing Vcap 62 and a bearing base 63. Bolts (i4-pass through the bearing cap 62, bearing base 63 and into a cored opening 65 in one endof the side frame l1. The heads 66 of the bolts 64 are prevented from upward movement by stop shoulders 67 formed in the opening 65 so thatwhen nuts 68 on the bolts 64' are tightened, the bearing case 60 is rigidly but slidably secured in the semi-spherical journal, thus permitting the arbor 57 and bearing case 60 to be rocked about said bearing case as a pivot to an inclined position as shown in Fig. 7, for pur# poses to be hereinafter described.

In order to detachably secure the saws on lthe shaft, in the .preferred form shown, a

plurality of collars 69 is mounted on the shaft 37 between the bearing case 60 and a similar bearing case 70 near the other end Each of the collars 69 is constrained to rotate with said shaft by a ,long feather-`key 7l engaging the collars and the shaft. "An annular flange 72 is secured on a threaded section 73 of said shaft near the bearing 60 and one end of each of a plurality` of 'rods 74 is seated in said flange and passes through each of the collars 69 at a kdistance from the center of the shaft 37.

The opposite ends of the rods 74 are seated in anend collar 75 so that the rods are prevented. .from axial movement. Each of the collars 69has o-ne face perpendicular to its axis, and the other face inclined to the axis ofthe collar and arbor, the collars being se arranged on the shaft 37 that perpeiulicular faces of adjacent collars abut. A large diameter saw 76 is positioned between the perpendicular faces of each pair of abutting collars and a saw 77, of smaller diameter is positioned between the inclined faces Vof abutting collars so that 4the saws are alternately perpendicular andr inclined to the axis of the shaft 37; Each of the collars 69 has an annular shoulder 78, and the iuternal diameter of each'saw is fitted to the periphery of this shoulder 7S so as to position each saw concentric with the shaft 37. Each saw is provided with al plurality of holes through which the rods 74 pass so that the. rotation of said saws relative to the shaft 37 is prevented. A sleeve 79 is vsaid nut is tightened, an enlarged annular shoulder 811i on said sleeve bears against the collar and presses all of the collars and saws into one rigid rotating unit. p

The bearing case 70 is preferably, but not necessarily, seiiii-spherical in shape and a roller or other bearing race Sais mounted in said bearing case 70 on the sleeve 79 so that said sleeve may move axially of the bearing race when the nut SQis tightened. Paolo ing plates 79qu are irovided outside the bearing cases G9 and 7() so that said cases may be packed with grease for the lubrication of the roller bearings. The bearing case 70 is sup-' ported on a bearing base Se, and a` bearing cap 87 with bolts 88 liold the bearing case 7 0 in much the saine manner as the bearing case GO on the other end of the shaft 37. A plurality of notches 89 is provided in the -bed knife e2, each notch being adapted to permit the rotation ofthe large diameter saws 76, while the inclined or ivabble saws which are smaller diameters, clearthe bed knife between the notches 89. By adjusting the flange 72 von the threaded section 73, the proper location of the saws 7 (S relative to the notches 89 is obtained. As a result of the arrangement of the sawsv relative to the bed knife 42, the paper stoclr is first ripped into ribbons without any cutting action whatever. The stool; which is fed to the arbor by the feeding mechanism is supported on the bed knife 42 as it approaches the saws in suoli a way that the grooves 89 form open spaces over which the stool; has to bridge. The teeth in the saws 76 then engage the steelt in this bridged position and tear out a series of pieces of stock, this tearing action being very violent, so that the edges are very rough and ragged because the stock is tough and unsupported over the grooves 89. rlhe ribbon which is produced by the saws 76 is then treated by the wabble saws7 77 which run very close tothe bed knife @so that the ribbons are further tornapart and thoroughly disintegrated to form paper pulp, which makes avery strong and tough paper. TheV pulp is delivered from the front of the machine down a chute 90, preferably as a part of the front spreader 13.

In order to` prevent the paper pulp from A being scattered by the rapidly rotating saw arbor, there -is provided a hood 91, semicy lindrical in shape, and which is secured to hood end castings 92, which in turn are supported by cheek castings 93. The cheek castings 93 are held in position by dowel pins 9e engaging` the spreader A13 and vare provided with lugs adapted to be engaged by the hooks 96 of the fastening bolts 97. The upper end of the bolts 97 is secured by nuts 98 to brackets 99 on the hood ends 92' so that the hood can be quickly disassen'ibled by loosening the nuts 98, turning` the hooks 9G through .99 to be free of the lugs 95 and lifting the hood, hoodends 92 and cheek castings 93 from their positionon the chine., The bearing cap 87, nut 82,' pulley 3G sleeve 79, collar 75, saws 76 and 77, and collars G9 are then removed in the order named, preferably after blocking up the shaft 37 iii an inclined position, shown in'ltig. 7. Adjusting` bolts 100 are mounted in the sido frames l() and 1l tovpi'operly position the bearing bases 86 and G3 relatively to said side frames.v This renders possible removal, repair and replacement of any of the saws in a very short space of time byA demounting one end of the shaft only, as hereinabove described, and the construction and form of the fraineand other parts of the machine provide economy of space before and after the machine is set up, and facilitate the operation of setting chine. Y

I claim as my invention i i. In a material shredding machine, a rotatable saw arbor, a. plurality ot circular saws'inonnted on said'ai'bor, bearings rotatably supporting each end of said saw arbor;

means for changing the angular position of the axis of said arbor about one of said bearings for disassembly of said saws, and

means for feeding the material to be shredded into said saws. o

2. In a material shredding machine, an arbor, a plurality of spacing collars mounted on said arbor, a plurality of tools supported .on saidarbor by said collars, means for rotating said arbor, means for feeding tlie'inaterial to be shredded to said tools, means' for rotatably supporting each end of said arbor and for permitting the detac-hinentofone end of said arbor from itsbearing, and inclining the airis of the arbor fromits normal operating position so that said .tools and collars may be removed from said arbor. Y

3. Inv a material shredding machine, a

rotatable arbor,` a plurality of tools de# tachably mounted on said arbor, bearings rotatably supporting the ends of said saw arbor, means for releasably securing said' bearings. in predetermined substantially fixed positions, said means permitting either endof said arbor to be 'shifted to remove either end of the arbor and its bearing from said securing means While the other vend remains securedby said securing means to permit removal of said tools from the arbor.

4t; In a material shredding machine, a saw arbor, a plurality of circular saws mounted in spaced relation on said "'arbor'isul'istantially perpendicular to the anis4 of said arbor, a plurality of circularwabble saws mounted on said arbor, said wabble saws being disposed between said perpendicular saws and being inclined to the axis ofthe arbor and having` a diameter smaller than said-perpendicular saws, a bedA knife having up or assembling the maJ ico lli)

notches adapted toreceive the peripheries of the perpendicular saws, means for rotating said arbor, and means for feeding` the material to be shredded into said saws.

5. In a material shredding machine, a saw arbor, a plurality of circular saws mounted in spaced relation on said arbor substantially perpendicular to the axis of said arbor, a plurality of circular wabble saws mounted on said arbor, said wabble saws being disposed bctween said perpendicular saws and being inclined to the axis of the K, arboi' and having a diameter smaller than said perpendicular saws, means for detachably mounting saidsaws on said arbor, abcd knife having a plurality of spaced notches adapted to receive portions of the periplieries of said kperpendicular saws, and means for rotating said arbor. n y r 6. ln a material shredding machine, a rotatable saw arbor, a plurality of circular saws in spaced relation on said arbor substantially perpendicular to the axis of said arbor, a plurality of circular wabble saws on said arbor, said wabble saws Vbeing disposed between ,said perpendicular saws, bearings rotatably supportingthe ends of said arbor, means for releasably securing saidk bearings in predetermined substantially fixed positions, said means permitting either end of said arbor to be shifted to remove either end of said arbo i and its bearing from said securing means while the other end remains secured by said securing means to permit removal of said saws from said arbor.

7. ln a material shredding` machine,V a rotatable saw arbor,a plurality of circular saws in spaced relation on said arborsub- .portions to be acted upon by said perpen lco stantially perpendicular to the axis of said arbor,a` plurality of circular'wabble saws on said arbor, said wabble saws being dis-A posed between said perpendicular saws,

bearings rotatably supporting the ends off said arbor, means for releasably securing said bearings in predetermined substantially 'fixed positions, said means permitting` either end of said arbor to be shifted to remove either ond of said arbor and its bearings from said securing means while the Aother end remains secured by said securing means to permit removal said saws from said arbor, a bedknife adjacent said arbor, said bod `knife. having notches adapted tol rcceire portions of the peripheries of said pei'- pendicular saws and portions adjacenty said notches for supporting the material to be shredded as it extends across said notched Ydicular saws.

8.111 a material shredding' machine, a

frame. a rotatable saw arbor, a plurality of f saws 'detachably mountedv on said arbor,

bearings rotatably supporting the ends of said arbor,- bearing cases for said bearings,

Vsaid bearing cases having arcuate shaped n fed onto said bed knife.

outer sides, meansl for releasably securing said bearing cases to the frame of the machine, said means permitting one end of vsaid arbor to be released and the arbor to 1 named saws and inclined to said lirst named saws, a bed knifek adjacent said saws and having notches to receive portions of the peripheries of said first named saws, and conveying means for feeding the material to be operated upon onto said bed knife.

10. In'a material shredding machine, a rotatable saw arbor, a plurality of circular saws mounted` in spaced relationon said arbor substantially perpendicular to l the airis vof said arbor, a plurality of saws mounted von said arbor between said first named saws and inclined to said first named saws, a bed knife adjacent said saws an'l havingy notches to receive poi'tioiis of the peripheries of said first named saws, con-- Veying means for feedingk the material to be operated upon onto said bed knife, and means cooperating .with said conveying means for compressing the material. as it is 11.7111 `a material shredding machine, a saw arbor, a plurality of spacing collars secured to said arbor, aplui'ali't-yA of circular saws mounted onY said arbor between said spacing collars, a bearing' rotatably supporting each end of said arbor, one of said bearings having a send-spherical sup porting' member, means forA rotating said arbor,'ineans for feeding' material to be shredded into said arbor, and mea-ns for mounting said supporting member to pei'- mit inclination.r of the anis of said arbor about said semi-spherical supporting' membei' from its normal operating position so as to permitdetachment of the spacing collars and saws.

12.111. a material shredding' machine, a

ksaw arbor, a plurality of circular saws 13. In a material shredding machine, a saw arbor, a plurality ot frame members, a

seiiii-sphei'ical bearing member mounted on one of said frame members, a removable bearing member associated with another of said frame members, said bearing members being adapted to rotatably support said saw arbor, means for rotating said saw arbor, means for feeding material to be shredded into said saws, means for detachably securing said removable bearing member on said frame, said means permitting the removal of the removable bearing member from said saw arbor so that said arborl may be inclined from its normal op erating position about .said semi-spherical bearing member.

14. In a material shredding machine, a saw arbor, a plurality of circular saws detachably mount-ed on said arbor, a semispherical bearing member rotatably supporting' each end of said arbor, means for rotating said saw arbor, means for feeding` material to be shredded into said saws, and means for removably mounting one of said bearing members on said machine, said means permitting said bearing member to be detached from its mounting so that thc saw arbor may be inclined from its normal. operating position to permit removal of said saws from the arbor.

15. In a material shredding machine, a saw arbor, a plurality of circular saws mounted on said arbor, a hood member partially enclosing said saws, a plurality of frame supporting members including a plu rality of hood supporting portions, hook bolts removably securing said hood member to said hood supporting members, means for rotating said saw arbor, and means for feeding material to be shredded into said saws.

16. In a material shredding machine, a rotatable shaft, a plurality of rotatable saws disposed at substantially right angles to the axis of said shaft, a plurality of saws of smaller diameter than said firstnamed saws and disposed at inclinations to said first named saws around said shaft, the relatively large and small diameter saws being arranged in substantial alterna tion, means for supporting a portion of material to be shredded adjacent said saws, said means comprising alined substantially alternate material supporting and nonsupporting portions adjacent` said saws, the non-supliiorting portions being alined with the peripheries of the large diameter saws vand the `supporting port-ions being alined with the small diameter saws, whereby the portions of the material to be shredded arc engaged by the large diameter saws in the non-supporting portions of said material supprting means to remove portions of the' GEO. D. RYTHER. 

